Python problem

Newsgroups	comp.lang.python
Date	2013-02-19 19:01 -0800
Message-ID	<d8fe7094-3f11-4d18-88cc-a75dbf1b832e@googlegroups.com> (permalink)
Subject	Python problem
From	ach360@gmail.com

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I'm so lost. Given the formula pi=4-4/3+4/5-4/7+4/9-4/11+...... How do I print a table showing approximate value of pi by computing one term4-4/3 then two terms4-4/3+4/5, and so on.Then how many terms of the series before I get 3.14, 3.141, 3.1415, 3.14159. Please helps computer teacher literally says figure it out and doesn't help and expects a perfect program.this is in python 3 please give an answer I can understand and an example. 
Thanks :) :) 
I need this right now. 
Thanks for your time.

I need this ASAP

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Python problem ach360@gmail.com - 2013-02-19 19:01 -0800
  Re: Python problem Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2013-02-19 23:10 -0500
    Re: Python problem ach360@gmail.com - 2013-02-19 20:36 -0800
  Re: Python problem Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2013-02-20 04:22 +0000

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